Why is Sayu so based?
Because strong doli who don't need no fish.
There's nothing based about being angry about being made the third wheel and trying to give your friend the payback with this kind of low blow. Miuna and Sayu were bitches this episode.
It's not her fault if Miuna is so indecisive. Also, you must remember that for her is very hard to be remembered that she liked Kaname. She's brave, stronger and the best of the two.
Well her fish husbando is awake now so maybe she'll be happy.
meanwhile miuna gets her ena back because reasons.